Apparatus and method for manufacturing aerosol-generating substrate segments

Abstract

The embodiment of the invention discloses manufacturing equipment and a manufacturing method of an aerosol generating substrate section. The manufacturing equipment of the aerosol generating substrate section comprises an extrusion device and a spraying device. The extrusion device is used for extruding the mixed material to form an extrusion matrix. And the spraying device is used for spraying flavor substances to the extrusion matrix. According to the manufacturing equipment of the aerosol generating matrix section, the mixed material is extruded through the extrusion device to form the extrusion matrix, the mixed material is the component mixed material of the aerosol generating matrix section, the processability of the extrusion matrix is high, continuous production of the extrusion matrix can be achieved, the process is short, the production efficiency is high, and the production cost is low. The manufacturing cost is low. Besides, after the extrusion device forms the extrusion matrix, the flavor substance is sprayed to the extrusion matrix through the spraying device, so that the loss of the flavor substance caused by too high temperature in the extrusion molding process is reduced, and the use experience of a user is further improved.

Description

Technical Field

[0001] This application relates to the field of smoke-generating products technology, and in particular to a manufacturing equipment and method for an aerosol-generating matrix segment. Background Technology

[0002] This section is intended to provide background or context for the embodiments described in this application. The description herein is not intended to be a prior art simply because it is included in this section.

[0003] Smoking products include aerosol-generating products that form aerosols through ignition and those that form aerosols through heating without combustion. In a typical heated-without-combustion aerosol-generating product, there is a medium section that volatilizes upon heating to generate an aerosol. This medium section is heated by an external heat source to a temperature sufficient to release the desired components and aroma. The medium section does not burn; instead, it is loaded with an atomizing agent, which is released through high-temperature heating during use to form an aerosol. Existing manufacturing systems primarily utilize three methods: casting, coating, and rolling. However, during extrusion molding, low-boiling-point flavor compounds are easily lost, thus affecting the user experience. Summary of the Invention

[0004] In view of this, the embodiments of this application aim to provide a manufacturing equipment and method for aerosol generation matrix segment, with the goal of reducing the loss of flavor substances during extrusion molding and thereby improving the user experience.

[0005] To achieve the above objectives, one aspect of this application provides a manufacturing apparatus for an aerosol generation matrix segment, the manufacturing apparatus comprising:

[0006] An extrusion apparatus for extruding a mixture to form an extruded matrix;

[0007] A spraying device for spraying flavoring substances onto the extruded matrix.

[0008] In one embodiment, the spraying apparatus includes a nozzle disposed around the periphery of the extruded substrate.

[0009] In one embodiment, the flavor substance is sprayed onto the surface of the extruded matrix through the nozzle of the spray head, and the distance between the nozzle and the surface of the extruded matrix is ​​0.5mm-2mm.

[0010] In one embodiment, the number of nozzles is multiple, and the central angle between two adjacent nozzles is 30°-120°.

[0011] In one embodiment, the number of nozzles is multiple, and each nozzle is spaced apart on the periphery of the extrusion matrix.

[0012] In one embodiment, the spraying apparatus includes a flow divider having a flow divider cavity, the flow divider being disposed around the periphery of the extruded matrix, and the nozzle communicating with the flow divider cavity.

[0013] In one embodiment, the flow divider is annular, the extrusion matrix is ​​inserted into the flow divider, one end of the nozzle is connected to the flow divider, and the other end extends toward the extrusion matrix.

[0014] In one embodiment, the spraying device includes a liquid storage tank with a liquid storage cavity, the liquid storage tank being provided with a mounting hole for the extruded matrix to pass through, the diverter being disposed in the liquid storage tank, and the liquid storage tank being capable of storing excess flavoring substances.

[0015] In one embodiment, the spraying device includes a feeding tank disposed outside the liquid storage tank, the feeding tank being connected to the distribution cavity and used to supply liquid to the distribution cavity.

[0016] In one embodiment, the spraying device includes a flow meter for measuring the flow rate of liquid supplied from the feeding tank to the distribution chamber.

[0017] In one embodiment, the spraying device includes a pressure regulating valve for adjusting the liquid supply pressure from the feeding tank to the distribution chamber.

[0018] In one embodiment, the spraying device includes a circulation pump for pumping the flavoring substance in the storage tank to the feeding tank.

[0019] In one embodiment, the nozzle extends in a direction perpendicular to the axial direction of the extruded matrix.

[0020] In one embodiment, the nozzle extends axially along the extrusion matrix, one end of the nozzle is connected to the flow divider, and the other end extends away from the flow divider. Along the direction away from the flow divider, the distance between the nozzle and the centerline of the extrusion matrix decreases.

[0021] In one embodiment, the nozzle includes a first connecting section and a second connecting section arranged sequentially along the axial direction of the extrusion matrix. The first connecting section is connected to the flow divider and is parallel to the extrusion matrix. The second connecting section forms a nozzle and is inclined to the extrusion matrix.

[0022] In one embodiment, the nozzle is annular and is disposed around the periphery of the extruded matrix.

[0023] In one embodiment, the manufacturing equipment includes a slitting device disposed downstream of the spraying device along the conveying direction of the extruded matrix, for slitting the extruded matrix.

[0024] In one embodiment, the manufacturing equipment includes a conveying device positioned upstream of the slitting device along the conveying direction of the extruded matrix, and the spraying device positioned between the conveying device and the slitting device; alternatively, the spraying device is positioned within the conveying device.

[0025] Another aspect of this application provides a method for manufacturing an aerosol-generating matrix segment, applied to an aerosol-generating matrix segment manufacturing apparatus. The manufacturing apparatus includes an extrusion device and a spraying device. The manufacturing method includes:

[0026] The mixture is extruded through the extrusion device to form an extruded matrix;

[0027] Flavoring substances are sprayed onto the extruded matrix using the spraying device.

[0028] In one embodiment, the manufacturing equipment includes a slitting device, and after the flavoring substance is sprayed onto the extruded matrix by the spraying device, the manufacturing method further includes: slitting the extruded matrix by the slitting device.

[0029] The aerosol generation matrix manufacturing equipment of this application embodiment extrudes a mixture of materials to form an extruded matrix using an extrusion device. The mixture consists of components of the aerosol generation matrix. This extruded matrix has high processability and can achieve continuous production, with a short process, high production efficiency, and low manufacturing cost. Furthermore, after the extruded matrix is ​​formed, flavor substances are sprayed onto it using a spraying device. This helps reduce the loss of flavor substances due to excessively high temperatures during the extrusion molding process, thereby improving the user experience. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the manufacturing equipment according to the first embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the manufacturing equipment according to the second embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the manufacturing equipment according to the third embodiment of this application;

[0033] Figure 4 for Figure 1 A partial structural diagram of the spraying device;

[0034] Figure 5 for Figure 2 Schematic diagram of the spraying and conveying device;

[0035] Figure 6 for Figure 3 A partial structural diagram of the spraying device;

[0036] Figure 7 for Figure 5 A schematic diagram of the connection structure between the flow divider and the nozzle, wherein the nozzle has one nozzle;

[0037] Figure 8 for Figure 5 A schematic diagram of the connection structure between the flow divider and the nozzle, wherein the nozzle has three nozzles;

[0038] Figure 9 This is a schematic diagram illustrating the implementation process of a method for manufacturing an aerosol-generating matrix segment according to an embodiment of this application.

[0039] Explanation of reference numerals in the attached figures

[0040] 100. Extruded matrix; 1. Extrusion device; 1a. Feed inlet; 1b. Die; 2. Spraying device; 21. Divider; 22. Spray head; 22a. Nozzle; 22b. First connecting section; 22c. Second connecting section; 23. Liquid storage tank; 23a. Liquid storage cavity; 23b. Mounting hole; 24. Feeding trough; 25. Circulating pump; 26. Flow meter; 27. Pressure regulating valve; 28. Fixed bracket; 3. Conveying device; 4. Slitting device. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0042] This application provides an apparatus for manufacturing an aerosol-generating matrix segment. Please refer to [link to relevant documentation]. Figures 1 to 8 The manufacturing equipment includes an extrusion unit 1 and a spraying unit 2. The extrusion unit 1 is used to extrude the mixture to form an extruded matrix 100. The spraying unit 2 is used to spray flavoring substances onto the extruded matrix 100.

[0043] The aerosol generating matrix segment is used to generate aerosols through heating. For example, the aerosol generating matrix segment can be used to generate aerosols by heating and combustion. The aerosol generating matrix segment can also be used to generate aerosols by heating without combustion. That is, the aerosol generating matrix segment is heated to a temperature below its ignition point to generate aerosols. The aerosol generating matrix segment does not burn during the aerosol generation process.

[0044] The specific composition of the aerosol generating matrix segment is not limited here. For example, in one embodiment, the aerosol generating matrix segment may include plant components, auxiliary components, smoke-generating components, adhesive components, etc.

[0045] In one embodiment, the plant-based ingredients are one or more combinations of raw tobacco leaves, tobacco fragments, tobacco stems, tobacco dust, and aromatic plants, which are powdered after being crushed. The plant-based ingredients are the core source of the product's aroma. Endogenous substances in the plant-based ingredients, such as nicotine, enter the bloodstream through atomization, promoting the pituitary gland to produce dopamine, thereby generating a sense of physiological satisfaction.

[0046] In one embodiment, the plant components may include one or more of the following: tobacco, tea leaves, tea stems, dandelion, eucalyptus, cloves, cinnamon, turmeric, fungi, insulin wood, astragalus, jujube seed, lentil, kudzu root, fennel, rosemary, star anise, honeysuckle, chrysanthemum, rose, calendula, mugwort, olive, ginseng, American ginseng, mung bean, red bean, dried tangerine peel, nut shells, lily, coffee, agarwood, peppermint, hawthorn, licorice, cocoa, wood ear fungus, lotus seed, lotus leaf, ginger, fresh ginger, tartary buckwheat, and wheat bran. The mass percentage of the plant components in the aerosol matrix may be 20%-80% (including endpoint values).

[0047] In one embodiment, the auxiliary component can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. The inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic fillers provide skeletal support for the plant components, and their micropores increase the porosity of the wall material after molding, thereby improving the aerosol release rate.

[0048] Lubricants include one or more of the following: candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase the flowability of particles, reduce friction between particles, result in a more uniform overall particle density, and also reduce the pressure required for mold forming, thus reducing mold wear.

[0049] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can, to some extent, slow down the loss of flavor substances during storage, increase the stability of flavor substances, and improve the sensory quality of the product. Emulsifiers (also known as surfactants) can reduce the interfacial tension between water-soluble and water-insoluble components in a mixture, and form a more robust film on the surface of microdroplets or an electric double layer on the surface of microdroplets due to the charge given by the emulsifier, preventing microdroplets from agglomerating and maintaining a homogeneous emulsion. Homogenizing two immiscible components through emulsification can improve the consistency of product quality.

[0050] The function of the smoke-generating agent is to produce a large amount of vapor upon heating, thereby increasing the amount of smoke in the smoke-generating product. In one embodiment, the smoke-generating agent may include, for example, one or more combinations of: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butanediol, and glycerol); an ester of a polyhydric alcohol (such as glyceryl monoacetate, glyceryl diacetate, or glyceryl triacetate); a monocarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanoate, dimethyl tetradecanoate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl lauryl acetate, triacetin, meso-erythritol, a mixture of diacetins, diethyl caprylate, triethyl citrate, methyl benzoate, phenylacetic acid methyl ester, ethyl vanillate, glyceryl tributate, and lauryl acetate).

[0051] In one embodiment, the adhesive component is a natural plant extract, a non-ionic modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan polysaccharide, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive achieves close contact with the product component materials through wetting at the interface, generating intermolecular attraction, thereby binding the powder, liquid, or other components. Furthermore, the use of a natural plant extract and a non-ionic adhesive avoids the release of harmful substances such as methanol, formaldehyde, and acrolein associated with colloidal modification, thus improving the safety of the product.

[0052] The aerosol generating matrix segment can be a particulate aggregate, which is a reconstituted tobacco medium, such as a reconstituted tobacco medium containing smoke-generating agents, tobacco, and other components. The aerosol generating matrix segment can also be a one-piece structure, for example, formed by injection molding, compression molding, or extrusion. Extrusion molding refers to a processing method in which a raw material mixture is added to an extruder, and the material is pushed forward by the screw or piston through the extruder barrel and screw, or by the piston, continuously passing through the die head to form products or semi-finished products of various cross-sections.

[0053] The aerosol generating matrix section provided in this application embodiment is used in an aerosol generating article. The aerosol generating article includes the aerosol generating matrix section and a functional section. The functional section is disposed at one end of the aerosol generating matrix section along the axial direction, and includes a filter section for filtering aerosols. The filter section is used to filter the aerosols generated by the aerosol generating matrix section.

[0054] Of course, in some embodiments, the aerosol-generating article may not include the functional section.

[0055] Aerosol generating products are intended for users to inhale the aerosols generated by the aerosol generating matrix section. For example, users can inhale the filtered aerosols through the filter section. The aerosols generated by the aerosol generating matrix section are transported to the filter section under suction negative pressure.

[0056] The aerosol generating product is intended for use in conjunction with an aerosol generating apparatus having a heating element. Specifically, the heating element heats and atomizes the aerosol generating matrix section to generate an aerosol.

[0057] There are various heating methods for heating components. Exemplary methods include center heating, peripheral heating, and / or bottom heating. Center heating involves inserting the heating component inside the aerosol-generating product to bake it from the inside out. Peripheral heating involves placing the heating component around the aerosol-generating product to bake it from the outside in. Bottom heating involves placing the heating component at the bottom of the aerosol-generating product, heating the air first, and then allowing the hot air to bake the aerosol-generating product from the bottom up.

[0058] It should be noted that the bottom of the aerosol-generated product is the end that is axially away from the functional section.

[0059] The heating methods of the heating components include, but are not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating, or laser heating.

[0060] In some embodiments, the functional section may only have a filtering section.

[0061] In other embodiments, the functional section further includes a cooling section located between the filtration section and the aerosol generation matrix section. The cooling section cools the aerosol before it is filtered by the filtration section. This cooling section can alleviate the "burning" sensation experienced by users when inhaling the aerosol.

[0062] The cooling materials used in the cooling section include, but are not limited to, one or more combinations of materials such as PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), cellulose acetate, and cellulose acrylic acid.

[0063] The filter materials used in the filtration section include, but are not limited to, one or more combinations of materials such as PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), cellulose acetate, and cellulose acrylic acid.

[0064] The cooling section and the filtration section can be made of the same material or different materials.

[0065] The mixture is a component of the aerosol-generating matrix segment. An extrusion process is used to shape the mixture into an extruded matrix 100, which has the same cross-sectional shape as the aerosol-generating matrix segment. That is, the cross-sectional shape of the extruded matrix 100 is the same as that of the aerosol-generating matrix segment. The extrusion process shapes the mixture without altering its chemical properties.

[0066] It should be noted that axial direction refers to the extension direction of the aerosol generation matrix segment (see [link to relevant documentation]). Figure 5 and Figure 6 For example, the aerosol generating matrix segment is formed by extrusion molding, with the axial direction being the extension direction of the extruded matrix 100. The cross-sectional shape refers to the shape of the extruded matrix 100 with a plane perpendicular to the axial direction as its cross-section.

[0067] Please see Figures 1 to 3 The extrusion device 1 for extruding a mixture to form an extruded matrix 100 refers to a processing method in which the mixture enters the barrel through the feed port 1a of the extrusion device 1, and is pushed forward by the screw through the action between the barrel and the extrusion screw, and is formed into an extruded matrix 100 with various cross-sectional shapes through the die 1b of the discharge port.

[0068] Temperature affects parameters such as the retention rate of volatile aroma substances, extrusion pressure, and extrusion speed of extruded materials. High-temperature extrusion can reduce extrusion pressure and increase extrusion speed. By reducing extrusion pressure, a lower density extruded matrix can be obtained, and by increasing extrusion speed, production efficiency can be improved.

[0069] At the same extrusion speed, high-temperature extrusion requires less extrusion pressure than room-temperature or low-temperature extrusion, and can obtain a lower density extrusion matrix 100; at the same extrusion pressure, high-temperature extrusion can achieve a faster extrusion speed.

[0070] The extrusion pressure described in this application refers to the extrusion pressure of the extrusion die (e.g., die 1b) located at the discharge port of the extrusion device 1.

[0071] In related technologies, to expand the aerosol generation matrix segment with different flavors, flavor substances are added during the preparation of the mixture. During the preparation of the mixture and the extrusion molding process, especially during the extrusion process, the temperature can reach above 150°C and the pressure can reach above 6 MPa. For low-boiling-point flavor substances, under high temperature and high pressure conditions, there is a significant loss during the extrusion process, with a maximum loss rate of over 30%. This results in a weak expression of the flavor substances during the inhalation process, affecting the inhalation experience.

[0072] Here, the specific type of flavor compound is not limited, such as fruit flavors like mint and blueberry, or other spice compounds.

[0073] The manufacturing equipment for the aerosol generation matrix segment in this application embodiment uses an extrusion device 1 to extrude a mixture to form an extruded matrix 100. The mixture is a mixture of components of the aerosol generation matrix segment. The extruded matrix 100 has high processability and can achieve continuous production, with a short process, high production efficiency, and low manufacturing cost. Furthermore, after the extrusion device 1 forms the extruded matrix 100, a flavoring agent is sprayed onto the extruded matrix 100 using a spraying device 2. This helps reduce the loss of flavoring agents due to excessively high temperatures during the extrusion molding process, thereby improving the user experience.

[0074] In one exemplary embodiment, the aerosol generating matrix segment has an air passage extending through at least one end of the aerosol generating matrix segment along its axial direction. For example, the air passage may extend through one end of the aerosol generating matrix segment along its axial direction. Alternatively, the air passage may extend through both ends of the aerosol generating matrix segment along its axial direction. Airflow can flow axially from one end of the aerosol generating matrix segment to the other end. In this way, the airflow carrying the aerosols can flow more smoothly, with less airflow resistance, significantly reducing suction resistance during the suction process and improving the suction experience.

[0075] In one embodiment, the airway may be formed inside the aerosol generating matrix segment or on the outer peripheral surface of the aerosol generating matrix segment.

[0076] In one embodiment, the air passage is a straight air passage extending in a straight line. Straight air passages are easy to form, reducing manufacturing difficulty. The flow resistance within a straight air passage is relatively low.

[0077] In one embodiment, the airway is a curved airway, with at least a portion of the pores having a non-zero curvature. The curved airway can significantly increase the airflow path without significantly increasing the length of the aerosol-generating matrix section, thereby prolonging the contact time between the airflow and the pore walls of the curved airway and improving the aerosol extraction rate.

[0078] In one embodiment, the curved airway is helical. That is, the three-dimensional shape of the curved airway is a spatial spiral. For example, the curved airway can be formed by rotating the die 1b during the extrusion process. The line connecting any point of the helical curved airway to its starting point has an angle of inclination relative to its axis. The helical curved airway can greatly extend the flow path of the airflow, causing aerosols to be released from the aerosol generation matrix section into the curved airway, increasing the flow velocity of the aerosols in the aerosol generation matrix section, thereby increasing the impact force of the airflow, enabling the aerosols to be uniformly mixed, improving aerosol uniformity, and enhancing the user's suction experience.

[0079] It is important to understand that the extrusion matrix 100 is a semi-finished product of the aerosol generation matrix segment. The extrusion matrix 100 has the same shape as the aerosol generation matrix segment. If the aerosol generation matrix segment has air channels, the extrusion matrix 100 also has the same air channels.

[0080] The cross-sectional shape of the air passage located inside the aerosol generation matrix section is not limited. For example, the cross-sectional shape can be circular, polygonal (including but not limited to triangle, square, rhombus, etc.), elliptical, racetrack-shaped, or irregular, etc. Among them, irregular refers to other symmetrical or asymmetrical shapes other than those listed above.

[0081] The cross-sectional shape of the air passage located on the outer peripheral surface of the aerosol generation matrix section can be semi-circular, semi-elliptical, polygonal, or irregular, etc. Among them, irregular refers to other symmetrical or asymmetrical shapes other than those listed above.

[0082] There is no limit to the number of airways; there can be one or more airways. "Multiple" means two or more.

[0083] It should be noted that the aerosol generating matrix segment contains micropores. For example, in the aerosol generating matrix segment of a particle aggregate, the gaps between particles constitute micropores. However, the air channels described in this application are different from micropores. The air channels described in this application are pores in a macroscopic sense, while micropores are pores in a microscopic sense. The cross-sectional area and length of the air channels are much larger than those of the micropores. The air channels are mainly processed by, for example, die 1b. Therefore, the cross-sectional area and length of the air channels can be changed according to design requirements. The size of the micropores, on the other hand, is determined by the gaps between particles. For example, if the mixture is a granular material, the extrudate formed by extruding the mixture has micropores. The cross-sectional area and length of the micropores are difficult to significantly change through processing.

[0084] In one embodiment, please refer to Figures 1 to 3The extruded matrix 100 is extruded in a horizontal direction. For example, the discharge port faces horizontally, and the die 1b can be set in a horizontal direction. For example, for an extruded matrix 100 with a curved, such as a spiral, air passage, the extruded matrix 100 is extruded in a horizontal direction. The extruded matrix 100 can be directly fed into the next device, such as the conveying device 3, by rotating the die 1b. Since the rotation of the die 1b will generate a certain stress in the extruded matrix 100, horizontal extrusion can reduce the stress generated by the extruded matrix 100 and release it directly (the generated stress can be eliminated by heating), thereby improving the yield of the aerosol generation matrix segment with a spiral air passage.

[0085] In another embodiment, the extrusion matrix 100 is extruded in a vertical direction. For example, the discharge port faces downwards, and the die 1b can be arranged in a vertical direction. That is, the extrusion matrix 100 is extruded along the direction of gravity. For example, for an extrusion matrix 100 with a straight air passage, extruding the extrusion matrix 100 in a vertical direction can improve the yield rate, reduce the investment cost of the extrusion apparatus 1, and also reduce the floor space occupied by the extrusion apparatus 1.

[0086] In another embodiment, the extrusion matrix 100 is extruded along an inclined direction. The inclined direction refers to the angle between the extrusion direction of the extrusion matrix 100 and the horizontal plane being greater than 0° and less than 90°. Inclined extrusion not only reduces the extrusion pressure of the mixture, but also facilitates the spatial design of other devices such as the conveying device 3.

[0087] In one embodiment, please refer to... Figures 1 to 3 The manufacturing equipment includes a slitting device 4, which is located downstream of the spraying device 2 along the conveying direction of the extruded matrix 100, and is used to slit the extruded matrix 100.

[0088] The extruded matrix 100 can be cut into a set length using the cutting tool of the cutting device 4. This allows the extruded matrix 100 of the set length to be suitable for subsequent packaging equipment, reducing the requirements on those equipment.

[0089] Understandably, there is no limit to the specific value of the set length; the set length can be determined based on the aerosol generation matrix or the manufacturing equipment.

[0090] In some embodiments, the extruded matrix 100 extruded by the extrusion device 1 has a continuous structure. That is, during the extrusion process, the extruded matrix 100 is continuously extruded, resulting in a continuous structure. Continuous extrusion can improve extrusion efficiency, and the extruded matrix 100 can be subsequently cut to a set length to shorten its length.

[0091] In some embodiments, the extruded matrix 100 has a segmented structure of a preset length. That is, during the extrusion process, the extruded matrix 100 naturally separates when it reaches the preset length. For example, the extruded matrix 100 may detach from the die 1b when it reaches the preset length due to reaching a critical value. In this way, the preset length of the extruded matrix 100 can be the length of the aerosol-generating matrix, and the extruded matrix 100 may not need to be segmented, thus saving the segmentation device 4 and reducing equipment costs.

[0092] It is important to understand that the preset length can be greater than, less than, or equal to the set length.

[0093] In one embodiment, please refer to... Figures 1 to 3 The manufacturing equipment includes a conveying device 3.

[0094] The extruded matrix 100 extruded by the extrusion device 1 flows to the conveying device 3, which then conveys the extruded matrix 100 to the next process device, such as the spraying device 2, for spraying flavoring substances.

[0095] The conveying device 3 is used to provide traction for the movement of the extruded matrix 100.

[0096] Here, the conveying direction of the conveying device 3 is the axial direction of the extruded matrix 100.

[0097] For example, along the conveying direction of the extruded matrix 100, the conveying device 3 is located upstream of the slitting device 4, and the spraying device 2 is located between the conveying device 3 and the slitting device 4. That is, along the conveying direction of the extruded matrix 100, the conveying device 3, the spraying device 2 and the slitting device 4 are arranged in sequence.

[0098] Here, by placing the spraying device 2 between the conveying device 3 and the slitting device 4, after the extrusion matrix 100 is formed by the extrusion device 1, it can be conveyed to the spraying device 2 via the conveying device 3, and then the flavoring agent can be sprayed onto the extrusion matrix 100 by the spraying device 2. This helps prevent the loss of flavoring agents due to excessive temperature during the extrusion molding process, thereby improving the user experience. Furthermore, by placing the slitting device 4 downstream of the spraying device 2, that is, after the extrusion matrix 100 is sprayed with flavoring agents and then slitting, the extrusion matrix 100 before slitting is better suited to improve the spraying effect and efficiency of the flavoring agents.

[0099] For example, the spraying device 2 is disposed on the conveying device 3.

[0100] During the process of conveying the extruded matrix 100 by the conveying device 3, the spraying device 2 can spray the extruded matrix 100. In this way, the spraying device 2 can be integrated into the conveying device 3, reducing the installation space of the manufacturing equipment and thus improving the compactness of the manufacturing equipment.

[0101] For example, please refer to Figure 3 The spraying device 2 includes a fixed bracket 28, which is fixed to the conveying device 3 or fixed in other positions.

[0102] In one embodiment, please refer to Figures 1 to 6 The spraying device 2 includes a nozzle 22, which is arranged around the periphery of the extrusion substrate 100.

[0103] The nozzle 22 adds flavoring material in a linear spraying manner, that is, sprays flavoring material along the travel direction of the extruded matrix 100.

[0104] It should be noted that the specific state of the flavor compound is not limited here. For example, the flavor compound may be in liquid, powder, or viscous form.

[0105] In this embodiment, by setting the nozzle 22, which is arranged around the periphery of the extrusion matrix 100, the flavor substances can be sprayed more evenly, thereby improving the consistency of flavor substance release and enhancing the user experience.

[0106] In one embodiment, the flavoring agent is sprayed onto the surface of the extrusion matrix 100 through the nozzle 22a of the spray head 22, and the distance between the nozzle 22a and the surface of the extrusion matrix 100 is 0.5mm-2mm. For example, it is 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2mm, etc.

[0107] Here, the greater the distance between the nozzle 22a and the surface of the extrusion matrix 100, the greater the radiation range of the flavor substance sprayed by the nozzle 22a, which is beneficial to improving the spraying efficiency of the flavor substance. On the other hand, the smaller the distance between the nozzle 22a and the surface of the extrusion matrix 100, the better the flavor substance can adhere to the extrusion matrix 100, which can improve the problem of the flavor substance being sprayed to other places outside the extrusion matrix 100 to a certain extent.

[0108] By controlling the distance between the nozzle 22a and the extrusion matrix 100, the discharge fan area of ​​the nozzle 22a is reduced, which makes it easier to apply flavor substances to the extrusion matrix 100 as much as possible. If the gap is set too large, the spraying area of ​​the extrusion matrix 100 will be too large, which may cause the extrusion matrix 100 to fall into the conveying device 3 or other parts, resulting in the loss of the extrusion matrix 100.

[0109] In this embodiment, by setting the distance between the nozzle 22a and the surface of the extrusion matrix 100 to 0.5mm-2mm, it is beneficial to improve the spraying efficiency of flavor substances and also to allow the flavor substances to adhere better to the extrusion matrix 100. To a certain extent, this can improve the problem of flavor substances being sprayed to other places outside the extrusion matrix 100, thereby improving the utilization rate of flavor substances.

[0110] It should be noted that there is no limit to the number of nozzles 22; there can be one or more.

[0111] In the embodiments of this application, "multiple" refers to two or more items.

[0112] In one embodiment, please refer to Figure 4 and Figure 5 There are multiple nozzles 22, and the central angle between two adjacent nozzles 22 is 30°-120°. For example, it is 30°, 40°, 45°, 60°, 70°, 72°, 80°, 90°, 100°, 110° or 120°, etc.

[0113] It is understood that multiple nozzles 22 are located approximately on the same circumference or completely on the same circumference, with the center of the circle located on the center line of the extrusion matrix 100. The central angle between two adjacent nozzles 22 refers to the angle between the lines connecting the two adjacent nozzles 22 to the center line of the extrusion matrix 100.

[0114] In this embodiment, by setting multiple nozzles 22 and setting the central angle between two adjacent nozzles 22 to 30°-120°, the flavor substances can be sprayed more evenly in the circumferential direction of the extruded matrix 100, which helps to improve the consistency of flavor substance release and enhance the user experience.

[0115] In one embodiment, please refer to... Figure 4 and Figure 5 Each nozzle 22 is spaced apart on the periphery of the extrusion matrix 100.

[0116] For example, each nozzle 22 is uniformly disposed on the periphery of the extrusion matrix 100, that is, each nozzle 22 is uniformly distributed along the periphery of the extrusion matrix 100.

[0117] In this way, multiple nozzles 22 can be used to spray the circumferential surface of the extrusion matrix 100 simultaneously, which helps to improve the spraying efficiency of flavor substances and improve the spraying uniformity of the extrusion matrix 100.

[0118] In one embodiment, please refer to Figures 4 to 6The spraying device 2 includes a flow divider 21 with a flow divider cavity. The flow divider 21 is arranged around the periphery of the extrusion matrix 100, and the nozzle 22 is in communication with the flow divider cavity.

[0119] Here, the flow divider 21 is used to divide the flavor substances so that the flavor substances are evenly sprayed out through each nozzle 22.

[0120] The flow divider 21 is arranged around the periphery of the extrusion matrix 100, and the nozzle 22 is connected to the flow divider cavity. This makes it easier for the nozzle 22 to be arranged around the periphery of the extrusion matrix 100.

[0121] In this embodiment, the spraying device 2 is provided with a flow divider 21, which is arranged around the periphery of the extrusion matrix 100. This facilitates the arrangement of the nozzles 22 around the periphery of the extrusion matrix 100. In addition, the flavor substance can be first delivered to the flow divider chamber, and then the flavor substance can be evenly sprayed out through each nozzle 22. This helps to control the amount of flavor substance sprayed out by each nozzle 22, and further improves the uniformity of spraying the extrusion matrix 100.

[0122] In one embodiment, please refer to Figures 4 to 6 The flow divider 21 is annular, and the extruded matrix 100 is inserted inside the flow divider 21. One end of the nozzle 22 is connected to the flow divider 21, and the other end extends toward the extruded matrix 100.

[0123] Here, the flow divider 21 is annular, which facilitates the arrangement of the nozzle 22 along the circumference of the extrusion matrix 100.

[0124] The extruded matrix 100 is inserted into the flow divider 21, that is, the extruded matrix 100 passes through the middle of the flow divider 21.

[0125] One end of the nozzle 22 is connected to the flow divider 21, and the other end extends toward the extrusion matrix 100. On the one hand, this facilitates the nozzle 22a of the nozzle 22 to face the extrusion matrix 100, and on the other hand, it facilitates the control of the distance between the nozzle 22a and the extrusion matrix 100.

[0126] Here, the nozzle 22 is, for example, disposed on the side wall of the flow divider 21 near the inner ring.

[0127] It is understood that one end of the nozzle 22 is connected to the flow divider 21, and the other end extends toward the extrusion matrix 100. That is to say, the spraying direction of the nozzle 22 is perpendicular to the axial direction of the extrusion matrix 100 (see Figure 22). Figure 4 and Figure 6 ).

[0128] Here, the spray width of each nozzle 22 on the extruded matrix 100 is not limited. For example, each spray width is 1mm-2mm.

[0129] In this embodiment, by passing the extruded matrix 100 through the flow divider 21, that is, by passing the extruded matrix 100 through the middle of the flow divider 21 through the output device, the nozzle 22 surrounding the flow divider 21 sprays flavor substances onto the extruded matrix 100 passing through the flow divider 21 without stopping the delivery of the extruded matrix 100, thereby improving the spraying efficiency and the uniformity of the spraying of the extruded matrix 100.

[0130] In one embodiment, please refer to Figure 1 The spraying device 2 includes a liquid storage tank 23 with a liquid storage cavity 23a. The liquid storage tank 23 is provided with an installation hole 23b through which the extruded matrix 100 passes. A diverter 21 is disposed in the liquid storage tank 23. The liquid storage tank 23 can be used to store excess flavor substances.

[0131] Here, "excess flavor substances" refers to flavor substances that are sprayed out of the nozzle 22 during the spraying process but do not adhere to the extrusion matrix 100.

[0132] In this embodiment, by setting up a liquid storage tank 23 and placing a diverter 21 inside the liquid storage tank 23, and by providing a mounting hole 23b through which the extruded matrix 100 passes, the liquid storage tank 23 allows the extruded matrix 100 to be movably inserted through the mounting hole 23b into the liquid storage tank 23 and through the diverter 21 located inside the liquid storage tank 23. In this way, when the nozzle 22 sprays the extruded matrix 100, flavor substances that are not attached to the extruded matrix 100 can be stored in the liquid storage tank 23. On the one hand, the flavor substances can be reused, improving the utilization rate of the flavor substances and thus reducing costs. On the other hand, it can prevent the flavor substances from being sprayed onto the ground or other parts of the spraying device 2, thereby improving the situation where the flavor substances affect the environment or the spraying device 2.

[0133] For example, the spraying device 2 is provided with a pulley system at the mounting hole 23b. The extruded matrix 100 is slidably disposed at the mounting hole 23b through the pulley system, which is beneficial to the sliding of the extruded matrix 100 and can improve the situation where the extruded matrix 100 is damaged during the sliding process to a certain extent.

[0134] In one embodiment, please refer to Figure 1 The spraying device 2 includes a feeding tank 24 located outside the liquid storage tank 23. The feeding tank 24 is connected to the distribution chamber and is used to supply liquid to the distribution chamber.

[0135] The feeding trough 24 is located outside the storage tank 23 and is used to supply flavor substances to the diversion component 21 inside the storage tank 23.

[0136] In this embodiment, by providing a feeding trough 24 outside the liquid storage tank 23, the feeding trough 24 is used to supply flavor substances to the diverter 21 inside the liquid storage tank 23, so that the flavor substances are evenly sprayed out through each nozzle 22. The convenience of using the spraying device 2 is improved by adding the substance inside the feeding trough 24 and then supplying liquid to the diverter chamber through the feeding trough 24, without having to open the liquid storage tank 23.

[0137] In one embodiment, please refer to... Figure 1 The spraying device 2 includes a flow meter 26, which is used to measure the flow rate of liquid supplied from the feeding tank 24 to the distribution chamber.

[0138] For example, the liquid storage tank 23 and the feeding tank 24 are connected by a pipeline, and the flow meter 26 is installed in the connecting pipeline between the liquid storage tank 23 and the feeding tank 24.

[0139] In this embodiment, a flow meter 26 is provided to measure the flow rate of liquid supplied from the feeding tank 24 to the diversion chamber, which helps to control the amount of flavor substances sprayed on the extruded matrix 100 and improve the user experience.

[0140] In one embodiment, please refer to... Figure 1 ,

[0141] The spraying device 2 includes a pressure regulating valve 27, which is used to regulate the liquid supply pressure from the feeding tank 24 to the diversion chamber.

[0142] It should be noted that the viscosity of different types of flavor substances can range from 400cp to 3000cp. To accommodate flavor substances of different viscosities, the liquid supply pressure of the feeding tank 24 to the distribution chamber can be adjusted by the pressure regulating valve 27 to control the flow rate and flow of the flavor substances. This is beneficial for controlling the amount of flavor substances sprayed onto the extruded matrix 100 and can improve the uniformity of the flavor substances.

[0143] The specific structure of the storage tank 23 is not limited here. For example, the storage tank 23 includes a box and a lid. The lid is connected to the box by a hinge. When the lid is opened, the extruded matrix 100 is pulled through the diverter 21. When the lid is closed and the pressure regulating valve 27 is opened, the flavor substance can be sprayed.

[0144] In one embodiment, please refer to... Figure 1 The spraying device 2 includes a circulation pump 25, which is used to pump the flavoring substance in the storage tank 23 to the feeding tank 24.

[0145] In this way, the flavor substances can be fully utilized, and the flow rate of the nozzle 22 can be controlled without worrying about the waste of flavor substances during the spraying process. Thus, the spraying efficiency of flavor substances can be improved by appropriately increasing the flow rate of flavor substances.

[0146] In one embodiment, please refer to Figure 5 The nozzle 22 extends along the axial direction of the extrusion matrix 100. One end of the nozzle 22 is connected to the flow divider 21, and the other end extends away from the flow divider 21. Along the direction away from the flow divider 21, the distance between the nozzle 22 and the center line of the extrusion matrix 100 decreases.

[0147] The nozzle 22 extends along the axial direction of the extrusion matrix 100. That is, the spraying direction of the nozzle 22 is not perpendicular to the axial direction of the extrusion matrix 100. In other words, the spraying direction of the nozzle 22 is inclined relative to the axial direction of the extrusion matrix 100. This can increase the spraying range of the extrusion matrix 100 and make the flavor substances adhere to the extrusion matrix 100 better.

[0148] Along the direction away from the splitter 21, the distance between the nozzle 22 and the centerline of the extrusion matrix 100 decreases, that is, at least a portion of the nozzle 22 gradually tilts toward the extrusion matrix 100 to gradually approach the extrusion matrix 100, which is beneficial for spraying the extrusion matrix 100.

[0149] In this embodiment, by setting the nozzle 22 to extend along the axial direction of the extrusion matrix 100, the spraying range of the extrusion matrix 100 can be increased, and the flavor substances can be better attached to the extrusion matrix 100, thereby improving the spraying efficiency and spraying effect of the extrusion matrix 100.

[0150] In one embodiment, please refer to Figure 5 The nozzle 22 includes a first connecting section 22b and a second connecting section 22c arranged sequentially along the axial direction of the extrusion matrix 100. The first connecting section 22b is connected to the flow divider 21 and is parallel to the extrusion matrix 100. The second connecting section 22c forms a nozzle 22a and is inclined to the extrusion matrix 100.

[0151] Here, "the first connecting segment 22b is parallel to the extrusion matrix 100" means that the first connecting segment 22b can be approximately parallel or completely parallel to the centerline of the extrusion matrix 100.

[0152] The second connecting section 22c is inclined to the extrusion matrix 100, which is beneficial for spraying the extrusion matrix 100.

[0153] Here, the number of nozzles 22a can be one, that is, nozzle 22a is a whole (e.g. Figure 7 As shown), there is no partition in the middle. By setting a single nozzle 22a, the structure is simple and the manufacturing cost is reduced.

[0154] There can also be multiple nozzles 22a, which are separated by spacers (e.g., Figure 8(As shown). By setting multiple nozzles 22a, the fragrance ingredients can be prevented from concentrating at both ends of the nozzle 22, resulting in more even spraying.

[0155] In one embodiment, please refer to Figure 7 and Figure 8 The nozzle 22 is annular and is arranged around the periphery of the extrusion matrix 100.

[0156] Here, nozzle 22a is roughly in the shape of a flattened duckbill.

[0157] By setting the nozzle 22 in a ring shape and surrounding the periphery of the extruded matrix 100, it is beneficial to make the surface area of ​​the extruded matrix 100 that the nozzle 22 faces larger, that is, to cover a larger surface area of ​​the extruded matrix 100, thereby improving spraying efficiency and making spraying more uniform.

[0158] This application provides a method for manufacturing an aerosol generation matrix segment, applicable to an aerosol generation matrix segment manufacturing equipment. For example... Figures 1 to 8 As shown, the manufacturing equipment includes an extrusion unit 1 and a spraying unit 2.

[0159] Figure 9 This is a schematic diagram illustrating the implementation process of a method for manufacturing an aerosol-generating matrix segment according to an embodiment of this application, as shown below. Figure 9 As shown, the manufacturing method of the aerosol generation matrix segment includes the following steps S901 to S902:

[0160] S901: The mixture is extruded through an extrusion device to form an extruded matrix.

[0161] The mixture is a component of the aerosol-generating matrix segment. An extrusion process is used to shape the mixture into an extruded matrix 100, which has the same cross-sectional shape as the aerosol-generating matrix segment. That is, the cross-sectional shape of the extruded matrix 100 is the same as that of the aerosol-generating matrix segment. The extrusion process shapes the mixture without altering its chemical properties.

[0162] Please see Figures 1 to 8 The extrusion device 1 for extrudes the mixture to form the extruded matrix 100 refers to a processing method in which the mixture is pushed forward by the screw through the action between the barrel and the screw of the extrusion device 1, and is made into an extruded matrix 100 with various cross-sectional shapes through the die 1b of the discharge port.

[0163] Temperature affects parameters such as the retention rate of volatile aroma substances, extrusion pressure, and extrusion speed of extruded materials. High-temperature extrusion can reduce extrusion pressure and increase extrusion speed. By reducing extrusion pressure, a lower density extruded matrix can be obtained, and by increasing extrusion speed, production efficiency can be improved.

[0164] At the same extrusion speed, high-temperature extrusion requires less extrusion pressure than room-temperature or low-temperature extrusion, and can obtain a lower density extrusion matrix 100; at the same extrusion pressure, high-temperature extrusion can achieve a faster extrusion speed.

[0165] The extrusion pressure described in this application refers to the extrusion pressure of the extrusion die (e.g., die 1b) located at the discharge port of the extrusion device 1.

[0166] S902: Flavoring substances are sprayed onto the extruded matrix using a spraying device.

[0167] In related technologies, to expand the aerosol generation matrix segment with different flavors, flavor substances are added during the preparation of the mixture. During the preparation of the mixture and the extrusion molding process, especially during the extrusion process, the temperature can reach above 150°C and the pressure can reach above 6 MPa. For low-boiling-point flavor substances, under high temperature and high pressure conditions, there is a significant loss during the extrusion process, with a maximum loss rate of over 30%. This results in a weak expression of the flavor substances during the inhalation process, affecting the inhalation experience.

[0168] Here, the specific type of flavor compound is not limited, such as fruit flavors like mint and blueberry, or other spice compounds.

[0169] The manufacturing method of the aerosol generating matrix segment according to this application embodiment involves extruding a mixture of materials using an extrusion device 1 to form an extruded matrix 100. The mixture comprises components of the aerosol generating matrix segment. This extruded matrix 100 exhibits high processability and allows for continuous production, resulting in a short process flow, high production efficiency, and low manufacturing cost. Furthermore, after the extruded matrix 100 is formed by the extrusion device 1, flavoring substances are sprayed onto it using a spraying device 2. This helps reduce the loss of flavoring substances due to excessively high temperatures during the extrusion molding process, thereby improving the user experience.

[0170] In one embodiment, please refer to Figures 1 to 3 The manufacturing equipment includes a slitting device 4. After the flavoring substance is sprayed onto the extruded matrix 100 by the spraying device 2, the manufacturing method also includes: slitting the extruded matrix 100 by the slitting device 4.

[0171] Along the conveying direction of the extruded matrix 100, the slitting device 4 is located downstream of the spraying device 2 and is used to slit the extruded matrix 100.

[0172] The extruded matrix 100 can be cut into a set length using the cutting tool of the cutting device 4. This allows the extruded matrix 100 of the set length to be suitable for subsequent packaging equipment, reducing the requirements on those equipment.

[0173] Understandably, there is no limit to the specific value of the set length; the set length can be determined based on the aerosol generation matrix or the manufacturing equipment.

[0174] In some embodiments, the extruded matrix 100 extruded by the extrusion device 1 has a continuous structure. That is, during the extrusion process, the extruded matrix 100 is continuously extruded, resulting in a continuous structure. Continuous extrusion can improve extrusion efficiency, and the extruded matrix 100 can be subsequently cut to a set length to shorten its length.

[0175] In some embodiments, the extruded matrix 100 has a segmented structure of a preset length. That is, during the extrusion process, the extruded matrix 100 naturally separates when it reaches the preset length. For example, the extruded matrix 100 may detach from the die 1b when it reaches the preset length due to reaching a critical value. In this way, the preset length of the extruded matrix 100 can be the length of the aerosol-generating matrix, and the extruded matrix 100 may not need to be segmented, thus saving the segmentation device 4 and reducing equipment costs.

[0176] It is important to understand that the preset length can be greater than, less than, or equal to the set length.

[0177] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in other embodiments," "in yet another embodiment," or "exemplary," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0178] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the protection scope of this application.

Claims

1. An apparatus for manufacturing a segment of aerosol-generating substrate, characterised in that, The manufacturing device comprises: an extruding device for extruding a mixture to form an extruded substrate; a spraying device for spraying a flavoring substance to the extruded substrate.

2. The manufacturing apparatus according to claim 1, characterized by The spraying device comprises a nozzle ring arranged around the periphery of the extruded substrate.

3. The manufacturing apparatus according to claim 2, wherein The flavoring substance is sprayed to the surface of the extruded substrate through the nozzle of the nozzle ring, and the distance between the nozzle and the surface of the extruded substrate is 0.5-2 mm.

4. The manufacturing apparatus according to claim 2, wherein The number of the nozzle rings is plural, and the central angle corresponding to two adjacent nozzle rings is 30-120°; and / or, the number of the nozzle rings is plural, and each nozzle ring is arranged at intervals on the periphery of the extruded substrate.

5. The manufacturing apparatus according to claim 2, wherein The spraying device comprises a flow divider with a flow dividing cavity, and the flow divider is arranged around the periphery of the extruded substrate, and the nozzle ring is in communication with the flow dividing cavity.

6. The manufacturing apparatus according to claim 5, wherein The flow divider is in the shape of a ring, the extruded substrate is arranged in the flow divider, one end of the nozzle ring is connected to the flow divider, and the other end extends towards the extruded substrate.

7. The manufacturing apparatus according to claim 5, wherein The spraying device comprises a liquid storage tank with a liquid storage cavity, and the liquid storage tank is provided with a mounting hole through which the extruded substrate passes, and the flow divider is arranged in the liquid storage tank, and the liquid storage tank can be used to store excess flavoring substance.

8. The manufacturing apparatus according to claim 7, wherein The spraying device comprises a feeding tank arranged outside the liquid storage tank, and the feeding tank is in communication with the flow dividing cavity to supply liquid to the flow dividing cavity.

9. The manufacturing apparatus according to claim 8, wherein The spraying device comprises a flow meter for measuring the flow rate of the liquid supplied from the feeding tank to the flow dividing cavity; and / or, The spraying device comprises a pressure regulating valve for regulating the liquid supply pressure of the liquid supplied from the feeding tank to the flow dividing cavity.

10. The manufacturing apparatus according to claim 8, wherein The spraying device comprises a circulating pump for pumping the flavoring substance in the liquid storage tank into the feeding tank.

11. The manufacturing apparatus according to claim 5, wherein The nozzle extends in a direction perpendicular to the axial direction of the extruded substrate.

12. The manufacturing apparatus according to claim 5, wherein The nozzle extends along the axial direction of the extruded substrate, one end of the nozzle is connected to the flow divider, and the other end extends away from the flow divider, and along the direction away from the flow divider, the distance between the nozzle and the center line of the extruded substrate decreases.

13. The manufacturing apparatus of claim 12, wherein, The nozzle comprises a first connecting section and a second connecting section arranged in sequence along the axial direction of the extruded substrate, the first connecting section is connected to the flow divider and is parallel to the extruded substrate, and the second connecting section is formed with a nozzle and is arranged obliquely to the extruded substrate.

14. The manufacturing apparatus of claim 12, wherein, The nozzle is in the shape of a ring and is arranged around the periphery of the extruded substrate.

15. The manufacturing apparatus of claim 1, wherein, The manufacturing device comprises a slitting device arranged downstream of the spraying device in the conveying direction of the extruded substrate, and the slitting device is used to slit the extruded substrate.

16. The manufacturing apparatus of claim 15, wherein, The manufacturing device comprises a conveying device arranged upstream of the slitting device in the conveying direction of the extruded substrate, and the spraying device is arranged between the conveying device and the slitting device, or the spraying device is arranged on the conveying device.

17. A method of manufacturing a segment of aerosol-generating substrate, characterised in that, The manufacturing device is applied to the manufacturing of an aerosol generating substrate segment, and the manufacturing method comprises: extruding the mixture through the extrusion device to form an extruded substrate; spraying flavoring material onto the extruded substrate by the spraying device.

18. The manufacturing method according to claim 17, wherein The manufacturing apparatus comprises a slitting device, and after the spraying of the flavoring material onto the extruded substrate by the spraying device, the manufacturing method further comprises slitting the extruded substrate by the slitting device.

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